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Layer‐by‐Layer Films of Graphene and Ionic Liquids for Highly Selective Gas Sensing
Author(s) -
Ji Qingmin,
Honma Itaru,
Paek SeungMin,
Akada Misaho,
Hill Jonathan P.,
Vinu Ajayan,
Ariga Katsuhiko
Publication year - 2010
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201004929
Subject(s) - graphene , ionic liquid , oxide , adsorption , layer (electronics) , layer by layer , nanotechnology , ionic bonding , materials science , molecule , chemical engineering , chemistry , organic chemistry , ion , engineering , catalysis , metallurgy
The best of both worlds : Graphene/ionic liquid (G–IL) layered films were obtained by direct reduction of graphene oxide in the presence of ionic liquids, followed by reassembly through electrostatic layer‐by‐layer (LbL) adsorption (see picture). The layer spacing of the graphene sheets is regularly expanded upon insertion of ionic liquid molecules (green discs). Selective sensing of aromatic compounds (red spheres) by using the G–IL LbL films was also achieved.